USB charger



FIG. 1 is a front elevational view of an embodiment of a USB charger;

FIG. 2 is a rear elevational view of the embodiment of the USB charger;

FIG. 3 is a top plan view of the embodiment of the USB charger;

FIG. 4 is a bottom plan view of the embodiment of the USB charger;

FIG. 5 is a left side elevational view of the embodiment of the USB charger;

FIG. 6 is a right side elevational view of the embodiment of the USB charger;

FIG. 7 is a first perspective view of the embodiment of the USB charger;

FIG. 8 is a second perspective view of the embodiment of the USB charger;

FIG. 9 is a third perspective view of the embodiment of the USB charger;

FIG. 10 is a fourth perspective view of the embodiment of the USB charger;

FIG. 11 is a first reference view of the embodiment of the USB charger; and,

FIG. 12 is a second reference view of the embodiment of the USB charger.

The broken lines shown in the drawings are included for the purpose of illustrating environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a USB charger, as shown and described. 